I got myself
this Li-ion compressor and jump starter.
The compressor is the #1 application I got this for.
No more fiddling with the stubborn wire to the 12V plug on the Honda compressor which is very stiff when cold.
No more fiddling with the screw-on nipple which always leaks; this one has a proper lever.
And it can jump start the car, shine a light and charge my phone 7 times over.
Top brand too: Ultimate Speed, not Initial Mass or Intermediate Reliability... Only the Besth!
Hardly any bigger than the original compressor that came with the tire sealant kit in the car.
Much smaller and lighter than the starter cables I took out of the trunk.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gmeter or 0.13 Mmile.
For confirmation go to people just like you.
For education go to people unlike yourself.